What does Frigidaire Refrigerator SH Error Code - Causes & Fix mean?

SH means a temperature sensor has shorted. The fix is usually testing the thermistor and replacing it if the resistance reading is wrong.

How do I fix Frigidaire Refrigerator SH Error Code - Causes & Fix?

Follow the step-by-step diagnosis below. The most likely fix is identified by checking power, sensor resistance, and control-board signals in order — using a multimeter and the part numbers documented in the parts reference table.

Can I keep running the equipment with this fault active?

Generally no. Faults on Appliance units are emitted when a sensor, safety, or control circuit is outside its operating envelope. Running through an active fault risks compressor, heater, or control-board damage. Diagnose and clear the fault first.

What part is most commonly replaced for Frigidaire Refrigerator SH Error Code - Causes & Fix?

The most frequently replaced parts for Frigidaire Refrigerator SH Error Code - Causes & Fix are listed in the Parts Reference section of this guide with OEM part numbers and typical price ranges. Check the table for direct replacements.

Is Frigidaire Refrigerator SH Error Code - Causes & Fix a DIY repair or do I need a technician?

Sensor swaps, fan motor replacements, and condenser cleaning are typical DIY-level repairs. Anything involving refrigerant, gas, or high-voltage (>240V) work requires a licensed technician for both safety and code-compliance reasons.

Frigidaire Refrigerator SH Error Code - Causes & Fix

Frigidaire Refrigerator SH Error Code — What It Means

SH shows on the temperature display when a temperature sensor, also called a thermistor, has shorted out. It appears on the freezer display for the freezer sensor and on the fresh food display for the refrigerator sensor.

With a shorted sensor the control board gets a bad temperature reading and cannot hold the right temperature. The fix is checking the sensor wiring and the thermistor resistance.

Jump to Fix

Common Causes

Shorted thermistor The temperature sensor has failed internally and reads outside its normal resistance range.
Pinched sensor wiring A wire rubbing against metal can short the sensor circuit to ground.
Moisture in the connector Water in the sensor plug can bridge the contacts and mimic a short.
Damaged wire harness Crushed or melted insulation can short two sensor wires together.
Faulty control board input If the sensor tests good, the board sensor input may be at fault.

Step-by-Step Fix

Unplug the refrigerator before touching any wiring.
Locate the sensor for the display showing SH, freezer or fresh food.
Disconnect the sensor harness and inspect it for pinched or wet wires.
Measure the thermistor resistance with a multimeter.
Compare the reading to spec, near 32,500 ohms at 32 degrees and 11,300 ohms at room temperature.
Replace the thermistor if the resistance is near zero or far off spec.
Dry and reseat the connector, then restore power and confirm the code is gone.

Parts Often Needed

Part	Notes
Frigidaire refrigerator temperature sensor	Amazon \| Thermistor for the fresh food section. Match to your model.
Frigidaire freezer temperature sensor	Amazon \| Thermistor for the freezer section. Confirm the part number.
Sensor wire harness	Amazon \| Replace if the insulation is pinched, melted, or shorted.

When to Call a Pro

If both the sensor and its wiring test within spec but SH keeps coming back, the sensor input on the control board may be damaged. Board level testing is a reasonable point to call a technician.